Removing roughness on metal surface by irradiation of intense short-pulsed ion beams

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:178217

Hashimoto, Y ^[1]; Yatsuzuka, M; Uchida, H; Yamasaki, T ^[2]

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1. Kobe City Coll. of Technology, Kobe, Hyogo (Japan). Dept. of Electronic Engineering
2. Himeji Inst. of Tech., Himeji, Hyogo (Japan)

Surface modification of metals with an intense pulsed ion beam (IPIB) was studied experimentally. When the temperature rise of metal surfaces by IPIB irradiation exceeds their boiling point, it is found that machining roughness on surfaces is removed. The experiments were performed with the pulsed power generator HARIMA-II at Himeji Institute of Technology. The main components of the ion beam were carbon and fluorine ions. The IPIB was irradiated to metal plates (Al, Cu and Ti) which were placed at the focal point. Machining roughness on Ti surface was removed after IPIB irradiation, while roughness on Al and Cu plates was not removed. Using the present experimental parameters (beam power density: 32 W/cm{sup 2}, pulse width: 25 ns), the temperature rise of the Ti surface was estimated to be 8,100 K which exceed its boiling point (3,000 K). However, the estimated temperatures of Al and Cu surfaces was 2,500 and 1,500 K, respectively, that are less than their boiling points. These studies above suggests that temperature rise over the boiling point of metals is necessary for removing machining roughness on metal surfaces.

• OSTI ID: 178217
• Report Number(s): CONF-950612--; ISBN 0-7803-2669-5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ALUMINIUM
COPPER
HEATING
ION SOURCES
ROUGHNESS
SURFACE TREATMENTS
TITANIUM